66463925 has 12 divisors (see below), whose sum is σ = 89907936. Its totient is φ = 48337200.

The previous prime is 66463921. The next prime is 66463937. The reversal of 66463925 is 52936466.

It is not a de Polignac number, because 66463925 - 2² = 66463921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66463921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120569 + ... + 121118.

It is an arithmetic number, because the mean of its divisors is an integer number (7492328).

Almost surely, 2^66463925 is an apocalyptic number.

It is an amenable number.

66463925 is a deficient number, since it is larger than the sum of its proper divisors (23444011).

66463925 is a wasteful number, since it uses less digits than its factorization.

66463925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241708 (or 241703 counting only the distinct ones).

The product of its digits is 233280, while the sum is 41.

The square root of 66463925 is about 8152.5410149229. The cubic root of 66463925 is about 405.0686770697.

The spelling of 66463925 in words is "sixty-six million, four hundred sixty-three thousand, nine hundred twenty-five".